Event Details
The pilot stated that while taxiing the airplane to the active runway, he observed thunderstorms approaching from a distance and decided to return to the ramp and scrub the flight. After speaking with a friend about the weather, he opted to attempt departure again. As he taxied toward the runway, precipitation became heavy and hailstones began to fall. He again decided not to depart and requested to taxi back.
After receiving clearance, he continued to the ramp area and encountered a strong wind. The airplane began to rock, and the pilot reacted by steering the nose into the wind to gain control. The wind continued to shake the airplane, tipping the right wing downward onto the taxiway surface. The hail became so severe that the pilot could not see out the windshield nor control the airplane. The airplane came to rest inverted approximately 65 feet off the taxiway.
Weather Conditions
The closest official weather observation station was at the airport. A special Meteorological Terminal Aviation Routine Weather Report (METAR) issued 5 minutes after the accident indicated winds at 11 knots, gusting to 18 knots, with thunderstorms in the vicinity. Another special METAR issued 11 minutes later indicated winds at 30 knots, gusting to 58 knots, with heavy thunderstorm and rain activity.
Aircraft Damage
The airplane incurred damage to the wing spar during the accident sequence. The pilot reported no preimpact mechanical malfunctions or failures.